/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.editor;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Shape;
import java.util.Map;
import javax.swing.JPanel;
import javax.swing.border.LineBorder;
import javax.swing.text.AbstractDocument;
import javax.swing.text.JTextComponent;
import javax.swing.text.View;
import org.netbeans.editor.view.spi.LockView;

/**
 *  Component for displaying folded part of code in tooltip
 *
 *  @author  Martin Roskanin
 */
public class FoldingToolTip extends JPanel {

    View view;
    EditorUI editorUI;
    public static final int BORDER_WIDTH = 2;
    
    /** Creates a new instance of FoldingToolTip */
    public FoldingToolTip(View view, EditorUI editorUI) {
        this.view = view;
        this.editorUI = editorUI;
        Coloring defColoring = editorUI.getColoring(SettingsNames.DEFAULT_COLORING);
        Color foreColor = (defColoring != null) ? defColoring.getForeColor() : null;
        setBorder(new LineBorder((foreColor == null) ? Color.BLACK : foreColor));
        setOpaque(true);
    }
    

    public void setSize(Dimension d){
        setSize(d.width, d.height);
    }

   /** Setting size of popup panel. The height and size is computed to fit the best place on the screen */
    public void setSize(int width, int height){
        int viewHeight = (int) view.getPreferredSpan(View.Y_AXIS);
        int viewWidth = (int) view.getPreferredSpan(View.X_AXIS);
        if (height<30) {
            putClientProperty(PopupManager.Placement.class, null);
        }else{
            height = Math.min(height, viewHeight);
        }
        
        height += 2*BORDER_WIDTH;
        
        width = Math.min(width, viewWidth);
        
        super.setSize(width,height);
    }
    
    private void updateRenderingHints(Graphics g){
        JTextComponent comp = editorUI.getComponent();
        if (comp == null) return;
        Object value = Settings.getValue(Utilities.getKitClass(comp), SettingsNames.RENDERING_HINTS);
        Map renderingHints = (value instanceof Map) ? (java.util.Map)value : null;

        // Possibly apply the rendering hints
        if (renderingHints != null) {
            ((java.awt.Graphics2D)g).setRenderingHints(renderingHints);
        }
    }
    
    
    protected void paintComponent(Graphics g) {

        updateRenderingHints(g);
        
        Rectangle shape = new Rectangle(getSize());
        Rectangle clip = g.getClipBounds();
        
        Coloring defaultColoring = editorUI.getColoring(SettingsNames.DEFAULT_COLORING);
        if (defaultColoring!=null && defaultColoring.getBackColor()!=null){
            g.setColor(defaultColoring.getBackColor());
        }else{
            g.setColor(SettingsDefaults.defaultBackColor);
        }
        g.fillRect(clip.x, clip.y, clip.width, clip.height);

        g.translate(BORDER_WIDTH, BORDER_WIDTH);

        JTextComponent component = editorUI.getComponent();
        if (component == null) return;
        int sideBarWidth = editorUI.getSideBarWidth();

        GlyphGutter gg = editorUI.getGlyphGutter();
        if (gg!=null){
            View docView = null;
            if (view.getViewCount() == 1){//lockview
                docView = view.getView(0);
            }
            int y = 0;
            if (docView!=null){
                AbstractDocument doc = (AbstractDocument)docView.getDocument();
                doc.readLock();
                try {
                    LockView lockView = LockView.get(docView);
                    if (lockView != null) {
                        lockView.lock();
                        try {
                            for (int i = 0; i